Checking The Display Status Of A Window; Temporary Input Fields - Omron NT21 Reference Manual

Window Function

2-15-7 Checking the Display Status of a Window

2-15-8 Temporary Input Fields

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When a window other than touch switch position is pressed
Notify bit touch switch
Touch the position other than touch switch
When a touch switch on a window is pressed
Notify bit touch switch
Touch a touch switch
Whether window is opened or closed is written to window open status at PT sta-
tus of PT notify area.
Window screen number and window position (bottom left coordinate) of current-
ly displayed screen is written to window control area.
Checking these areas from the host enables to know the display status of win-
dow. For details, refer to 3-4 Display and Control of Windows (page 307).
Numeral/Character string input field registered on a window is a temporary input
field.
(Only one numeral or character string input field can be registered for a window.)
This input field can be used - in combination with a number of numeral and char-
acter string input fields on base screen - for provisional input before any data is
input into the actual input field on the base screen.
The advantage of a temporary input field is that entries can be input into it while
checking the current setting on the base screen.
Numeral input field Temporary input field (displays data being input)
1 2 3 4 5 6
–41.8
0002.71
Current setting
However, if there is not even one numeral setting input field (numeric key type) or
character string input field on the base screen, the temporary input field will not
be displayed (cannot be used).
If the temporary input field has fewer digits than the actual input field on the base
screen (integer part + decimal fraction part + decimal point digit + sign digit ), it
will be displayed but can not be used.
If it is not possible to use a temporary input field, the data has to be input directly
onto the base screen.
The touched window comes to the front
Window status does not change.
Touch switch functions.
0555.44
7 8 9
4 5 6
1 2 3
. ENT
0
Window
Section 2-15
Notifies
Host